Causes of fatigue failure in the main bearing of an aero- engine

摘要

Fatigue failure in the central main bearing (CMB)of the compressor shaft of an aero-engine resulted in an air-crash.The cage of the CMB broke dur to fatigue, got stuck between thebearing balls and the outer race, misaligned them resulting insevere wear of the components and damaged the function of theengine. Simulated laboratory tests are conducted and the source ofcyclic stresses is discussed. 2000 Elsevier Science Ltd. All rights reserved.